/ Dictionary / Index C convective activity: Meaning and Definition of Find definitions for: convec'tive activ'ity Pronunciation: [key] — Meteorol. Meteorol. any manifestation of convection in the atmosphere, as hail or thunderstorms. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. convection oven convective discharge Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language